Average of 12 numbers 2370. If average of 8 is 2365, average of remaining 4? MCQ with Answer and Explanation

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Average of 12 numbers 2370. If average of 8 is 2365, average of remaining 4?

A. 2375

B. 2382

C. 2380

D. 2378

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum12=28440. Sum8=18920. Remaining=9520. Average=2380.

This question belongs to: Maths Average

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Question #1

Find the average of the first 5 multiples of 6.

A. 20

B. 15

C. 16

D. 18

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Correct Answer: Option D

Explanation:
Multiples:6,12,18,24,30 sum=90, count=5, avg=18.

This question belongs to: Maths Average

Question #2

Average of 25 numbers 40. If average of first 13 is 38, average of last 13 is 42, what is the 13th number?

A. 39

B. 38

C. 40

D. 42

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Correct Answer: Option C

Explanation:
Sum25=1000. Sum1-13=494. Sum13-25=546. 13th=494+546-1000=40.

This question belongs to: Maths Average

Question #3

The average of 5 consecutive numbers is 33. Sum of numbers?

A. 170

B. 165

C. 160

D. 155

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Correct Answer: Option B

Explanation:
Sum=33×5=165.

This question belongs to: Maths Average

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